Our knowledge about what makes digital commons work is terribly under-theorized. Yes, there are famous works by Lawrence Lessig and Yochai Benkler, and there are lots of projects and websites that are based on commoning such as like Wikipedia, free software, Arduino, open access journals, among countless others. But can we identify core principles for organizing digital commons? Can we use that knowledge to engineer the evolution of new commons? Identifying such principles just might let us move beyond “openness” as the ultimate goal of online life, to a more sustainable goal, the self-governed commons.